That is why. According to Sioux Falls Media they had to fly in a replacement plane (it was a 757) and UA flew Mechanics in from Chicago to investigate what happened to the plane (all mentioned in the article).

That is why. According to Sioux Falls Media they had to fly in a replacement plane (it was a 757) and UA flew Mechanics in from Chicago to investigate what happened to the plane (all mentioned in the article).

I don't think that story is for the latest incident. The article is dated April 14, 2010. Coincidentially it is the same airline, same type of aircraft and same airport, just 3 months earlier.